JPH0380006B2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a seat for a vehicle such as an automobile,
More specifically, the present invention relates to a side support device for a seat cushion and a seat bag.

(Prior Art) As shown in FIG. 5, the seat back of a general automobile seat having a side support device has left and right side frames 12, 12 movably attached to a seat frame 11, and these side frames 12, 12 are movably attached to the seat frame 11. It is configured to be moved in the direction of the arrow by rotation of the operating knob 13 to hold the seated person's body from the lateral direction. Therefore, as the side frames 12, 12 move, the left and right (lateral direction) raised parts 14a, 1 of the foam parts 14 move.
Since the entire seat 4a is movable to support the seated person's body, side support is extremely good.

However, the raised portions 14a, 14 of the pads 14
Due to the movement of the whole a, a gap is created between the back panel 15, which is fixed to the seat frame 11 and covers the side surface of the seat, and the side surface of the seat.
In addition, due to long-term use, the shape of the top of the raised portions 14a, 14a of the seat bag may be deformed.
There were problems such as loss of aesthetic appearance. 1 in the diagram
6 is the epidermis covering the pad 14.

(Purpose) Therefore, the object of the present invention is to prevent the side support portion from deforming even when the side support is used for a long period of time, and to prevent a gap from forming between the side support portion and the back panel as in conventional products.

(Structure) The present invention is composed of a frame structure in which side frames are fixed to the left and right sides of the frame, and foam parts installed across the left and right side frames of this frame structure. Inside both side frames of the body, a movable plate that rotates in the left-right direction (width direction) of the seat along both side frames is pivoted to the tip of a bracket whose base end is fixed to the left and right sides of the frame. In addition, a spring member is provided across the left and right movable plates to bias each movable plate outward.

(Function) Since the side frame is fixed to the frame, even when the movable plate moves, the shape of the side surface of the seat is maintained constant, and there is no gap between the side frame and the back panel. Since the seat is always held in a predetermined shape by the side frames, the overall shape of the seat will not be deformed due to use. Moreover, since a spring material is provided across the left and right movable plates to urge each movable plate outward, when the seat is not seated, the elasticity of the spring material rotates the left and right movable plates outward to provide left and right side support. When the seated person is seated, the spring material is pressed to rotate the left and right movable plates inward to narrow the space between the left and right side support parts to hold the seated person's body.

(Embodiment) FIG. 1 shows an automobile seat equipped with a side support device, in which reference numerals a and a' indicate side support portions, and a back panel 15 is disposed on the outer surface of the side support portion in a hugging manner.

This will be explained in detail with reference to FIGS. 2 to 4.

The side support device is attached to a frame structure 1 shown in FIG. The illustrated frame structure 1 includes a frame 1a formed by bending a pipe into a substantially U-shape, side frames 1b and 1b' protruding from the front side of the left and right sides of this frame 1a, and side frames 1b and 1b' that protrude from the front side of the left and right sides of this frame 1a, and A pair of movable plates 1c, 1c' are pivotally mounted to the tips of brackets 20, 20' whose base ends are fixed to the upper and lower sides of the plate, respectively, so as to be rotatable in the left and right direction, and from the pivot joint part A of both movable plates 1c, 1c'. It has a simple structure consisting of springs 1d and 1d' which are stretched on the front side and bias the ends of both movable plates 1c and 1c' outward. Therefore, when a load is applied to the springs 1d, 1d', the springs 1d, 1d' are pushed rearward, and as a result, the movable plates 1c, 1c' rotate around the pivot point A, with their tips inward. The angle of this tilting is proportional to the pressing force on the springs 1d and 1d'. Then, when the load is removed, the spring 1d,
1d' is restored by its elasticity, so the movable plate 1
c and 1c' are designed to return to their original states.

The above side frames 1b, 1b' and movable plate 1
A seat back having the side support portions a and a' is formed by applying a foam pad 2 to portions c and 1c' and fixing this with a skin 3.

As shown in FIGS. 2 and 3, the foam parts 2 have side parts 2c and 2 that constitute the side parts of the seat bag.
c' and the side part 2b forming the side support part,
2b' and the center part 2a, and the side part 2
Cut grooves 21, 21' are bored on the back side of b, 2b'. These notches 21, 21' are the movable plate 1c,
From the position where 1c' abuts, the side frames 1b,
It is provided on the top side of the movable plates 1c and 1c' to improve the movability of the movable plates 1c and 1c'. That is, the movable plates 1c, 1
When c' moves, the parts of the side parts 2b and 2b' that are not joined to the movable plates 1c and 1c' are not bitten, so the side parts 2b and 2b' face each other as the movable plate 1c moves slightly. move in the direction.

Thus, as shown in FIG. 2, when the person is seated, the central portion 2a of the pad 2 is pushed rearward, causing the springs 1d and 1d' to move rearward. As the springs 1d, 1d' move, the movable plates 1c, 1c' attached to both ends of the springs 1d, 1d' rotate inward, causing the side parts 2b, 2b' of the parts 2 to move inward. As a result, the distance between the left and right side support parts a and a' becomes narrower, and the side parts of the seated person are held (as shown by the two-dot chain line in FIG. 2). Then, when there is no load, the springs 1d, 1
Due to the elasticity of d', both movable plates 1c, 1c' are rotated outward in an expanding shape, so that the side parts 2b, 2b' which had been pushed out accordingly move outward, and the side support part The distance between a and a' becomes wider, making it easier for the seated person to sit.

Note that the above embodiment shows a simple support device that rotates the movable plates 1c, 1c' without using an operating member; It's fine if you did it.

(Effects) In the present invention, since the movable plate is arranged inside the side frame fixed to the frame, the overall shape of the seat is maintained by the side frame, and the entire side support parts provided on both sides of the seat are movable. It is less likely to deform than conventional products, and can maintain a predetermined external shape. Moreover, since there is no gap between the back panel and the skin that makes up the side of the seat during the side support operation, the aesthetics will not be impaired, and foreign objects like those of conventional products could be inserted into the gap and cause damage. There's nothing to do.

Furthermore, by adopting a structure in which a spring is stretched across both movable plates, both movable plates rotate due to the load of the spring, thereby supporting the side portions of the seated person. Therefore, compared to conventional side support devices having operating members, the structure is extremely simple, and it is convenient because the sides of the seated person can be accurately supported without operating the operating members.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a vehicle seat according to the present invention;
2 is a sectional view taken along the line - in FIG. 1, FIG. 3 is an exploded sectional view, FIG. 4 is a perspective view of the frame structure, and FIG. 5 is a sectional view of a conventional product. In the figure, 1 is a frame structure, 2 is a part, 1a is a frame, 1b, 1b' are side frames, 1c, 1
c′ indicates each movable plate.

Claims (1)

[Claims] 1 Consists of a frame structure with side frames fixed to the left and right sides of the frame, and foam parts installed between the left and right side frames of this frame structure, The base ends of brackets are fixed to the left and right side parts of the frame on the inside, movable plates are pivotally attached to the tips of the left and right brackets so as to be rotatable in the left and right direction, and each A vehicle seat with a side support device, characterized in that it is provided with a spring material that urges the tip of a movable plate outward.